Galapagos land birds - other birdlife

Smooth-Billed Anis
Locally known as "Garrapateros", they feed on ticks(garrapatas) and therefore there name and presence. They were introduced to free cattle from this pest. Now today they are the real pest, they outcompete the tree finches for food. It is a crow sized black bird with a large drooping tail and black bill with a beautiful high pitched call.

Yellow warbler
(Dendroica petechia) Another colourful bird is the bright yellow warbler. This bird is not endemic and may be found anywhere from Alaska to Peru. The male has thin red streaks on its chest and a red cap. It is common throughout the Galapagos Islands,  especially found in mangroves or manzanillo trees.

Galapagos martin
(Pronge modesta), Another endemic bird a glossy purple swallow that nests in cliffs as around Tagus Cove, or crater rims in the interior, of many islands. Some believe the population here is merely a slightly smaller variant of the Southern martin (P. Concolor) of south America, suggesting a recent arrival on the westerly winds

Dark-billed cuckoo
(Coccyzus melacoryphus). The first sighting in the Galápagos was in 1888 on San Cristóbal and Floreana, and today it is found on most other large islands as well. Native to tropical lowlands from Argentina to Colombia, it may owe its arrival and success in the Galapagos Islands to the same environmental factors that threaten other species. The warm waters of El Niño years encourage its dispersal, and it has colonized other islands off the continent as well. As befits a recent arrival, the cuckoo is shy and secretive, instinctively wary of human contact.